a) The equivalent resistant seen by the source. b) The total current I. c) . The voltage across the 2K resistor. 1 kN 1 kN. >4 kN 20V 3 kN 2 kN 6.6 kN
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- 4. Consider the power dissipated by a resistor, P=I'R . Suppose we have a current of 1 amp and a resistance of 100 Ohms, and these values are exact. The power is then 100 Watts exactly. a. Suppose the current changes by +0.02 A and the resistance changes by -1 Ohm. These are changes in the current and resistance. Use partial derivatives to find the approximate change in the power and check this result by directly substituting the changed current and resistance. b. Now suppose the current has a tolerance of +/- 0.02 A and the resistance a tolerance of +/- 1 Ohm. Find the tolerance in the power dissipated.Two resistors, 255 ohms and 290 ohms are connected in series across a 17 V battery. A.) What is the current in the circuit? B.) What is the potential diffrence across the battery? C.) What is the potential diffrence across the 255 ohm resister?The potential difference across a resistor decreases by a factor of 2. How does the current change? (Ohm's law: V=IR) A. It decreases by a factor of 4. B. It decreases by a factor of 2. C. It increases by a factor of 4. D. It increases by a factor of 2.
- Calculate voltage and currents for each resistor in the system Battery/iOLab device - 3V Resistor #1 - 20 kΩ Resistor #2 - 10 kΩ Resistor #3 - 4.7 kΩSolve the problem completely. A) Find the equivalent resistance between points a and b? B) If a potential difference of 30.0 V is applied between points a and b, what is the current in the 4.00-ohm resistor?4. A conductor of radius r, length and resistivity phas resistance R. It is melted down and formed into a new conductor, also cylindrical, with one fourth the length of the original conductor. Find the resistance of the new conductor.
- The heater element of a 120V toaster is a nichrome wire with length of 5.4 m, and diameter of .48 mm. The resistivity of nichrome at the operating temperature of the toaster is 1.3x10^-6 ohm-meter. What is the power drawn drawn closest to? A. 380 W B.370 W C. 360W D. 400w E. 410WHINTS: GETTING STARTED I I'M STUCK! What is the resistance of a 6.8 m length of nichrome wire that has a radius of 0.321 mm? How much current.does.it.carry when connected to a 120 V source? 2 R= I = Enter a number. A5) Please need the correct to this problem with full explanation and methods how you get the answer, please.
- A 20 V battery is connected to a resistor. Neglecting the internal resistance of the battery, the power delivered to the resistor is 10 W. The resistance of this resistor is equal to a. 40 0 Ob.3.0 2 OC. 0.02 n d. 0.33 0Please help1. In the figure below battery potentials are V, = 10 V and V2 = 20 V. These are not specified. You may take them any order you want. The resistances are R = 5 0, R2 = 15 N, and R3 = 25 N. Find the current through each resistor. Ry- ww ww