Question

Alicia, a physics student working on her lab assignment sets up the circuit shown in the figure. The reading of the voltmeter is 6.90 V and the reading of the ammeter is 2.90 mA. Assuming the voltmeter and ammeter are both ideal, calculate the following.

A circuit starts near the bottom of a diagram at the positive terminal of a battery labeled emf ℰ. The circuit extends to the right to reach a resistor labeled 3.00 kΩ, extends up to reach an ammeter, and then splits into two parallel horizontal branches to the left of the ammeter. The branch at the top contains a voltmeter, and the branch at the bottom contains a resistor labeled R. The branches recombine, and the circuit ends at the negative terminal of the battery.

(a)

the value of R (in kΩ)

kΩ

(b)

the emf (in V) of the battery

V

(c)

the voltage (in V) across the 3.00 kΩ resistor

V

Answer 1