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List of top Science Questions on Magnetic Effects Of Electric Current asked in CBSE Class VII

The bulb in the circuit shown in Fig. does not glow. Can you identify the problem? Make necessary changes in the circuit to make the bulb glow.

The bulb in the circuit

  • CBSE Class VII
  • Science
  • Magnetic Effects Of Electric Current

In the circuit shown in Fig.

Would any of the bulb glow when the switch is in the ‘OFF’ position?
(i) Would any of the bulb glow when the switch is in the ‘OFF’ position?
(ii) What will be the order in which the bulbs A, B and C will glow when the switch is moved to the ‘ON’ position?

  • CBSE Class VII
  • Science
  • Magnetic Effects Of Electric Current

Will the compass needle show deflection when the switch in the circuit shown by Fig. is closed?

Will the compass needle show deflection when the switch in the circuit

  • CBSE Class VII
  • Science
  • Magnetic Effects Of Electric Current