Class VII

When an electric current passes through a solenoid, it acts as a/an
  1. insulator
  2. electric bell
  3. resistor
  4. bar magnet
Which of the following is an essential element in an electric circuit ? 
  1. switch 
  2. connecting wires 
  3. voltmeter 
  4. ammeter 
The unit to measure electric resistance is:
  1. Joule
  2. Ohm
  3. Ampere
  4. Volt
Which of the following is an essential element in an electric circuit?
  1. switch
  2. connecting wires
  3. voltmeter
  4. ammeter
Which of the following is the best option while considering the safety of household electric appliances?
  1. We should use wire strip as fuses.
  2. We should use non-ISI marked MCBs
  3. We should use ISI marked MCBs
  4. We should use conductors with high melting point in fuses.
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