In this experiment, you have a 28.4N resistor. If the lab manual specifies that the maximum safe electric current through the resistor is 473mA, what is the maximum voltage (in unit of volt) you can apply to the resistor?
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- The following circuit has an ideal battery of potential difference 15.16V and R1 has a resistance of 3.15Ω and R2 has a resistance of 9.17Ω. The capacitor has a capacitance of 6.06pF. What is the current through R2 after this circuit has been hooked up for a long time?An electric immersion heater normally takes 83.0 min to bring cold water in a well-insulated container to a certain temperature, after which a thermostat switches the heater off. One day the line voltage is reduced by 7.00% because of a laboratory overload. How long does heating the water now take? Assume that the resistance of the heating element does not change. Number Units... SW1 100к МАХ VR1 100K MAX VR2 100K 100K V1 D1 10V R2 8K VR2 is set to 9.1 % setting. The switch is pressed and activates the SCR. What is the voltage measured at the gate terminal, VG, if the actual current flowing at the gate is 0.78 mA? Required, VG ? (in volts, in 2 decimal places) :
- A student set up a simple circuit with an ohmic lightbulb, battery and switch. When the switch is closed, the student measures 527mA being drawn from the 4.2V battery by the lightbulb. They decide to leave the switch closed for a few hours. When they measure the current again, they find it is now 397mA, and correctly guesses that the battery has dropped voltage. What would they measure the new voltage across the battery to be? (Units: V)The space between two metallic coaxial cylinders of length L = 0.520 m and radii a = 1.70 cm and b = 2.50 cm is completely filled with a material having a resistivity ρ = 34.0 Ω⋅m. The figure below shows a cross section of the configuration. What is the resistance between the two cylinders? Give your answer with a unit of "Ohm". Find the current between the two cylinders if a potential difference of 16.0 Volts is maintained between the two cylinders.A capacitor of capacitance C = 1 µF is connected in series to a resistor of resistance R = 10 MN and a battery of emf = 3V. The capacitor is initially discharged. How many %3D seconds will it take for the current in the circuit to decrease to 42% of its initial value? Write the answer, rounded off to 2 decimal places, without units.
- If the battery in the circuit below is 4.88V, resistor R1=153.95Ω, and resistor R2=173.95Ω, what is the magnitude of the current flowing through the circuit? Please give your answer in units of milli-Amps (mA).V + R w с The switch in the figure is thrown so that the battery is in series with the resistor and an uncharged capacitor. After 1.9 time constants, what is the charge on the capacitor in terms of the maximum charge, Qo? Supply the missing numerical factor below. Q(1.9T) = ( )QoA solar cell generates a potential difference of 0.17 V when a 550 resistor is connected across it, and a potential difference of 0.24 V when a 970 resistor is substituted. What are the (a) internal resistance and (b) emf of the solar cell? (c) The area of the cell is 1.2 cm² and the rate per unit area at which it receives energy from light is 4.9 mW/cm². What is the efficiency of the cell for converting light energy to thermal energy in the 970 2 external resistor? (a) Number (b) Number (c) Number i Units Units Units Ω V per
- An electric immersion heater normally takes 95.0 min to bring cold water in a well-insulated container to a certain temperature, after which a thermostat switches the heater off. One day the line voltage is reduced by 5.00% because of a laboratory overload. How long does heating the water now take? Assume that the resistance of the heating element does not change. Number UnitsA short circuit to the grounded metal case of an appliance occurs as shown in the figure below. The person touching the case is wet and only has a R₂ = 7.15 kn resistance to earth/ground. Vcase=? PCB ww /=? 5 mA (a) What is the voltage (in V) on the case if 5.00 mA flows through the person? V (b) What is the current (in A) in the short circuit if the resistance of the earth/ground wire is R = 0.10 07A 5.0 2 resistor is connected in series with another resistor and a 4.5 V battery. The current in the circuit is 0.50 A. Calculate the value of the unknown resis- tance. Answer in units of 2.