Question
Mon September 17, 2012 By:
which of the following component is used to reguate current in a circuit without changing a voltage source?
 
a) rheostat
b) ammeter
c) voltmeter
d) variabe resistance

what is the difference between variable resistance and rheostat?

Expert Reply
Tue September 18, 2012
There is actually no difference between a rheostat and variable resistance.
Both of them vary the resistance of the circuit.
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