Class X

Who has stated the Right hand Thumb Rule?
  1. Orsted
  2. Fleming
  3. Einstein
  4. Maxwell
In all the electrical appliances, the switches are put in the
  1. live wire
  2. earth wire
  3. neutral wire
  4. All of these
Field inside a solenoid is:
  1. directly proportional to its length
  2. directly proportional to current
  3. inversely proportional to number of turns
  4. inversely proportional to current
Cyclotron is a device to:
  1. to accelerate neutrons
  2. accelerate electrons
  3. both (a) and (b)
  4. none of these
The frequency of power supply used in India is
  1. 70Hz
  2. 60 Hz
  3. 50Hz
  4. 30Hz
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