Q1 · medium · AI-verified
A household uses 5 bulbs of 60 W each for 8 hours per day. What is the total electrical energy consumed in 30 days (in kWh)?
- 144 kWh
- 36 kWh
- 60 kWh
- 72 kWh
Q2 · hard · AI-verified
The magnetic field inside a long straight solenoid carrying current is:
- Zero everywhere inside
- Uniform and parallel to the axis of the solenoid
- Uniform and perpendicular to the axis of the solenoid
- Non-uniform and perpendicular to the axis
Q3 · medium · AI-verified
Which device works on the principle of electromagnetic induction?
- Electric Motor
- Electromagnet
- Electric Generator
- Galvanometer
Q4 · easy · AI-verified
According to Ohm's Law, if the voltage across a conductor is 12 V and the resistance is 4 Ω, what is the current flowing through it?
- 0.33 A
- 8 A
- 48 A
- 3 A
Q5 · hard · AI-verified
A household electric circuit has a fuse of 5 A. How many bulbs of 100 W rating (operating at 220 V) can be safely connected in this circuit?
- 12
- 11
- 10
- 5