Board Exam Practice — Electricity and Magnetism

Grade 10 Science — Board Exam Practice — Electricity and Magnetism: 25 practice questions with instant scoring and explanations.

1. The SI unit of electric current is:
2. Ohm's law states that:
3. Two resistors of 2Ω and 3Ω connected in series have total resistance:
4. Two resistors of 4Ω and 4Ω connected in parallel have equivalent resistance:
5. The power consumed by a resistor is given by:
6. The commercial unit of electrical energy is:
7. A 60W bulb and 40W bulb connected in series experience a voltage in ratio:
8. The magnetic field due to a straight current-carrying wire is:
9. The force on a current-carrying conductor in a magnetic field is given by:
10. An electric motor converts:
11. An electric generator converts:
12. The magnetic field inside a solenoid is:
13. The SI unit of magnetic field is:
14. Lenz's law states that induced current opposes:
15. The equivalent resistance of three 6Ω resistors connected in parallel is:
16. If the potential difference across a resistor is doubled, the current becomes:
17. The direction of induced current can be determined by:
18. A 100Ω resistor carrying 2A of current has power dissipated of:
19. The EMF of a cell is the:
20. In a fused plug, the fuse is placed in:
21. Eddy currents are caused due to:
22. The transformer equation is:
23. The magnetic force on a stationary charge is:
24. If a circuit has 5A current and 10Ω resistance, the voltage is:
25. The resistance of a conductor increases with: