What is the role of commutators in a dc motor?
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Explain why soft iron keepers are suitable for storing magnets.
Between Voltage and current, what causes a shock?
A transformer is not considered to be an amplifier.Explain
state the reason why current produced by a simple cell falls rapidly when the cell is being used.
state three ways in which the strength of magnetic field can be increased
Explain the purpose of the capacitor in an electric bell