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Chapter 12
Science
X CBSE
In a parallel circuit, which of the following is same across all the resistors
Current
Potential difference
Resistance
Resistivity
When resistance is doubled at constant voltage, current will become.
½ times
2 times
¼ times
4 times
A piece of wire of resistance R is cut into five equal parts. These parts are then connected in parallel. If the equivalent resistance of this combination is R′, then the ratio R/R′ is
1/25
1/5
5
25
The resistivity does not change if
the material is changed
the temperature is changed
the shape of the resistor is changed
both material and temperature are change
When the current passing through each resistor is same, the circuit is called
series circuit
parallel circuit
Both A and B
None of these
