.What current flows through the bulb of a 9.00-V flashlight when its hot resistance is 3.50 0?
Q: 5. A copper wire is 2.50 m long and has a diameter of 2.5 mm. How much current will it draw when…
A: Given that: Diameter of wire d = 2.5 mm = 2.5×10-3 m Length of wire: l = 2.50 m Voltage across…
Q: Three lightbulbs each with a resistance of 50ohms, are connected in series to a 100 V power supply.…
A: The total resistance in the circuit is
Q: A clothes dryer uses 20 A of current. How much charge flows through the circuit in a single 60…
A: The current in a circuit is defined as the charge flowing though a point in the circuit in unit time…
Q: 19. In her bathroom, Mindy has an overhead heater that consists of a coiled wire made of nichrome…
A: The objective of this question is to find the current through the wire when it is first turned on.…
Q: Consider a 1100 W, 120 V megatoaster that perfectly toasts bread every time. a) What is its…
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Q: Resistance of potentiometer wire is 12 per meter. A Daniel cell of e.m.f. 1.08 v balances at 216 cm…
A: To find-(1) Current through wire=?(2) Balancing length (l2)=?Given-Resistance per meter=1 ohmE1=1.08…
Q: The storage battery of a car has an emf of 12V . If the internal resistance of the battery is 0.42,…
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Q: How much current flows thru a 60 resistor in 4 minutes if it is connected to a 9V battery ?
A: Given that,Resistor : R = 6 (Ohm)Time : t = 4 (min) = 240 (sec)Voltage : V = 9 (V)Here we need to…
Q: What current flows through a 1.50-cm diameter of pure copper wire (p = 1.70×10-8 Ω⋅m) that is 14.0…
A: In this case, the diameter and length of the copper wire are given. And the resistivity of the wire…
Q: A 1.5 V D-size battery stores 54 kJ of energy. What steady current could this battery provide for 20…
A: Given data: emf of D-size battery is V=1.5 V Energy stored in the battery is E=54 kJ=54×103J Time…
Q: A lightbulb has a resistance of 280 N when operating with a potential difference of 80 V across it.…
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Q: The efficiency for LED lightbulbs is typically about 90 lumens per watt (Im/W). Use Ohm's law to…
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Q: A 60 W lightbulb typically has a current of 0.50 A flowing through it. Calculate (a) the number of…
A: Given, current, I = 0.50 A Power, W = 60 W
Q: A wire 4.0 m long and 6.0 mm in diameter has a resistance of 15 m2. A potential difference of 23 V…
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Q: A 100 W electric light bulb is connected to a 250 V supply. Determine (a) the current flowing in the…
A: Given data :- Power P = 100 W Voltage suppled to the bulb V = 250 V
Q: You touch a defective appliance while standing on the ground, and you feel the tingle of a 2.5-mA…
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Q: The EMF of the battery is 1.4 V and its internal resistance is 12 N. It is connected to an external…
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Q: A human being can be electrocuted if a current as small as 50 mA passes near the heart. An…
A: Given a human being can be electrocuted if a current as small as 50 mA passes near the heart. An…
Q: When a 30.0V battery is connected to a wire 50.0m in length with a resistivity of 2.25x10-7 Ωm. If a…
A: Given data: Battery voltage (V) = 30.0 V Length (L) = 50.0 m Resistivity (ρ) = 2.25 × 10-7 Ωm…
Q: Calculate the current through a 10.0 m long nichrome wire with a diameter of 0.642 mm if it is…
A: Given data *The length of the nichrome wire is l = 10.0 m *The diameter of the wire is d = 0.642 mm…
Q: There is a potential difference of 0.90 V between the ends of a 20 cm long graphite rod that has a…
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Q: Giant electric eels can deliver a voltage shock of 5.00 x 10² V and up to 1.00 A of current for a…
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Q: A 100 W electric light bulb is connected to a 250 V supply. Determine (a) the current flowing in the…
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Q: A copper wire is 2.50 m long and has a diameter of 2.5 mm. How much current will it draw when…
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Q: 10. An aluminum wire (resistivity at 20°C of 2.65x10-8 2m, temperature coefficient of 0.00429/°C) is…
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Q: What current flows through a 2.54-cm- diameter rod of pure silicon that is 20.0 cm long, when 1.00 ×…
A: According to ohms law the current of the rod is I=VR Here, R is the resistance, V is…
Q: Problem 9: A cylındrical capacitor 1s made of two concentric conducting cylınders. The inner…
A: Using the Gauss’s law, in the region R1 < r < R1, first we will draw the Gaussion surface at r…
Q: When a 1.50V battery is shorted by a copper wire whose resistance can be ignored, the current…
A: battery voltage V =1.50 voltCurrent i = 1.53A
Q: If the 0.100-mm diameter tungsten filament in a light bulb is to have a resistance of 0.200 Ω at…
A: Given - Diameter of tungsten filament ,d = 0.100 mm =0.100 x 10-3 m Resistance of tungsten…
Q: when an emergency radio is connected to a 9-V battery, a current of 25 mA flows through the radio.…
A: We first list the data given in the problem as :
Q: A 9 V battery costs $1.49, and will run a portable CD player for 6 hours. Suppose the battery…
A: The objective of the question is to calculate the cost of the energy in dollars per kilowatt-hour…
Q: An ion channel in a cell membrane carries 2.4 pA when it's open, which is only 20% of the time. (a)…
A: Solution of part A The average current is given by Iavr = 2.4×10-12×20100Iavr = 0.48×10-12 AIavr =…
Q: The emf of a battery is E = 18 V. When the battery delivers a current of 0.3 A to a load, the…
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Q: A copper wire is 2.50 m long and has a diameter of 2.5 mm. How much current will it draw when…
A:
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