Question

9. Consider a simple circuit consisting of one light bulb and one battery. In order to measure the current flowing through the circuit and the voltage drop across the light bulb one could use an ammeter and a voltmeter connected in the following way:

A. The ammeter in series with the light bulb and the voltmeter in parallel with the light bulb

B. The ammeter in series with the light bulb and the voltmeter in series with the light bulb

C. The ammeter in parallel with the light bulb and the voltmeter in parallel with the light bulb

D. The ammeter in parallel with the light bulb and the voltmeter in series with the light bulb

E. Only the ammeter is necessary to measure both current and voltage

F. Only the voltmeter is necessary to measure both current and voltage

G. Neither device will work, one must use a galvanometer

H. None of these

Answer 1

*Correction In last two points

-ammeter is always connected in series to measure the flow of current through the circuit.

-Because voltmeter always measures the voltage accross the appliance ,so instead of connecting in series we have to connect in parallel with the appliance in a circuit.