Physics Practice: Electromagnetism (Mock Test 2 - Intermediate)
1. A solenoid acts like a bar magnet when current passes through it. The polarity of the ends can be determined by:
2. The magnetic field strength inside a current-carrying solenoid depends on:
3. When a magnet is moved quickly towards a stationary coil, the deflection in the galvanometer increases. This shows that induced e.m.f depends on:
4. To reverse the direction of rotation of a DC Motor, we can reverse the direction of:
5. Which device uses the principle of electromagnetic induction to convert mechanical energy into electrical energy?
6. The core of a transformer is laminated to reduce energy loss due to:
7. A transformer cannot work on DC because:
8. The SI unit of magnetic flux is:
9. In Fleming's Right Hand Rule, the forefinger represents the direction of:
10. For a Step-down transformer, the transformation ratio ($k = N_s/N_p$) is:
