A wire of resistance 6.0 Ω is connected to a battery whose emf ℰ is 5.0 V and whose internal resistance is 1.0 Ω. (a) How much energy is transferred from chemical to electrical form in 3.0 min? _____________J(b) How much energy appears in the wire as thermal energy in that time? _____________J (please show units when you work this out so that I can follow it easier.)

A capacitor with a capacitance of 3.5 μF is initially uncharged. It is connected in series with a switch of negligible resistance, a resistor with a resistance of 19 kΩ, and a battery that has a potential difference of 170 V. What is the charge Q, in microcoulombs, on the capacitor when the current in the resistor equals one half its maximum value.

Consider the circuit shown in the figure below. (Assume R₁ = 14.0 and R₂ = 7.50 .) b 25.0 V R₁ R₁ Submit Answer a R₂ (b) Find the current in the 20.0-0 resistor. A R₂ C (a) Find the potential difference between points a and b. V 20.0 Ω ℗

A lithium ion battery has an emf of 14.00 V but a terminal voltage of AVab = 7.00 V is measured when an 3.00 A current is drawn from the battery. How much power is dissipated as heat by the battery's internal resistance, r? Provide the solution: W a r

Consider an electrical circuit comprising a battery with voltage V that provides a current I through a resistor network with resistor R1 in series with the parallel combination of R2 and R. Calculate the value of R if: V I R1 R2 2.40E+01 2.40E-01 7.50E+01 5.00E+01   Make sure to express your answer in scientific notation with 2 decimal points.

An unknown resistor is connected between the terminals of a 9.00 V battery. Energy is dissipated in the resistor at the rate of 0.580 W. The same resistor is then connected between the terminals of a 7.50 V battery. At what rate is energy now dissipated? ________________W (please show units when you work this out so that I can follow it easier.)

A solar cell generates an EMF of 12 V. The terminal potential difference of 9.6 V is measured when a 6 º 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 ✓ The power in the load, Puseful = What maximum useful power can be generated by the cell? The max. power, Pmax Units Select an answer Units Select an answer ✓

The circuit below contains two real batteries, each having significant internal resistance. Battery #1 has an EMF of 6.00 V and an internal resistance of 1.00 ohm. Battery #2 has an EMF of 12.00 V and an internal resistance of 2.00 ohms. These two batteries are connected in series with two resistors R, = 6.00 ohms and R,= 3.00 ohms. ri d (6.00,V) (1.00 0) R1 (6.00 N) R2 (3.00 N) a r2 E2 (2.00 Q) (12.00 V) 18. The current in the 12.00 Volt battery is equal to C. 0.500 A. A. 0.750 A. B. 1.00 A. D. 2.00 A. E. 1.50 A. 19. The potential difference across the terminals of battery #1 from point C to point d is equal to C. 7.00 V. A. 5.50 V. B. 6.00 V. D. 5.00 V. E. 6.50 V. 20. The potential difference across the terminals of battery #2 from point a to point b is equal to C. 13.00 V. A. 14.00 V. В. 10.00 V. D. 11.0 V. E. 12.00 V.

In the figure the current in resistance 6 is i6 = 1.33 A and the resistances are R₁ = R₂ = R3 = 1.720, R₂ = 16.5 Q, R5 = 8.750, and R6 = 4.79 Q. What is the emf of the ideal battery? Number i E 40 www R₁ Units www R3 R₂ www R₁ 2 www R₂ R6

When a car's starter is in use, it draws a large current. The car's lights draw much less current. As a certain car is starting, the current through the battery is 64.8 A and the potential difference across the battery terminals is 8.82 V. When only the car's lights are used, the current through the battery is 2.18 A and the terminal potential difference is 10.7 V.   Find the battery's emf. ______ Find the internal resistance. ______