Pick the odd one out.
Ammeter
Voltmeter
Rheostat
Odometer
The potential difference between the terminals of an electric iron is 240 V and the current is 5.0 A. What is the resistance of the electric iron?
48 Ω
4.8 Ω
0.48 Ω
480 Ω
Which of the following characteristic is not suitable for a fuse wire?
thin and short
thick and short
low melting point
higher resistance than rest of wiring
The elements of electrical heating devices are usually made of :
Tungsten
Bronze
Nichrome
Argon
The work done in moving a unit charge across two points in an electric circuit is a measure of :
Current
Potential difference
Resistance
Power
The unit for expressing electric power is :
volt
joule
coulomb
watt
The current of 10 A is drawn by a filament of an electric bulb for 10 minutes. Find the amount of electric charge that flows through the circuit ?
100 C
6000 C
600 C
10 C
An electric bulb is connected to a 220 V generator. The current is 0.50 A. What is the power of the bulb?
130 W
110 W
120 W
100 W
The heat produced by passing an electric current through a fixed resistor is proportional to the square of:
magnitude of resistance of the resistor
temperature of the resistor
magnitude of current
time for which current is passed
The device used for measuring potential difference is known as :
voltmeter
galvanometer
voltameter
potentiometer
