Each of the six real batteries in the figure has an emf of 20.3 V and a resistance of 4.120. (a) What is the current through the (external) resistance R=3.57 0? (b) What is the potential difference across each battery? (c) What is the power of each battery? (d) At what rate does each battery transfer energy to internal thermal energy? (a) Number Units Units (b) Number Units (c) Number Units (d) Number

An auto mechanic needs to determine the emf and internal resistance of an old battery. He performs two measurements: in the first, he applies a voltmeter to the battery's terminals and reads 11.8 V; in the second, he applies an ammeter to the terminals and reads 17.7 A. What are the battery's emf E and internal resistance r? E = V r = Ω

A battery has an emf of 15.0 V. The terminal voltage of the battery is 9.6 V when it is delivering 18.0 W of power to an external load resistor R. (a) What is the value of R? (b) What is the internal resistance of the battery?

A solar cell generates an EMF of 21 V. The terminal potential difference of 18.9 V is measured when a 50 resistor is connected across the battery. What is the internal resistance of the solar cell? The internal resistance, r= Units Select an answer How much power is released in the cell and in the load? The power in the cell, Pinternal = Units Select an answer V The power in the load, Puseful = Units Select an answer What maximum useful power can be generated by the cell? The max. power, Pmax Units Select an answer

The power dissipated by a light bulb’s resistor is proportional to how bright the light bulb glows.  The lightbulb’s wattage is defined assuming it has a fixed resistance and is connected to a voltage source of 110 V.  Two 110-V light bulbs, one “25 W” and the other “100 W”, are connected in series to a 110-V source. Which statement below is correct? The current in the 100-W bulb is greater than that in the 25-W bulb. The current in the 100-W bulb is less than that in the 25-W bulb. Each bulb will have a potential difference of 55 V. The 100-W bulb lights dimmer than the 25-W bulb none of the answers

The potential difference across a resistor is 4.4 * 10 ^ 2 V If the resistance of the resistor is 1.8k how much current flows through the resistor?

Suppose two batteries, with unequal emfs of 2.00 V and 3.00 V, are connected as shown in the figure. (Figure 1) Figure R=4.00 2 ww 8=2,00 V H H 8=3.00 V r 1 of 1 > Part A If each internal resistance is 0.28 2, and R = 4.000, what is the voltage across the resistor R? VR = Submit [5] ΑΣΦ Previous Answers Request Answer * Incorrect; Try Again; 4 attempts remaining Provide Feedback ?

A battery has an emf of 15.0 V. The terminal voltage of the battery is 11.4 V when it is delivering 16.0 W of power to an external load resistor R. (a) What is the value of R? (b) What is the internal resistance of the battery?

The power dissipated by a resistor with a resistance of R = 100Ω is P = 2.0 W . What are the current through and the voltage drop across the resistor?

In the figure &₁ = 2.97 V, 82=0.938 V, R₁ = 4.44 Q, R₂ = 2.110, R3 = 3.71 Q, and both batteries are ideal. What is the rate at which energy is dissipated in (a) R₁, (b) R2, and (c) R3? What is the power of (d) battery 1 and (e) battery 2? www R₁ =48₁ www ww R R$ (a) Number (b) Number E₂1 (c) Number i (d) Number i (e) Number i Textbook and Media Units Units Units Units Units کے