When one leg of parallel circuit is opened out the total current will______________?
When one leg of parallel circuit is opened out the total current will______________?
A. reduce
B. increase
C. decrease
D. become zero
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When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of the heater will___________?
When resistance element of a heater fuses and then we reconnect it after removing a portion of it, the power of the heater will___________?
A. decrease
B. increase
C. remain constant
D. none of the aboveThe substances which have a large number of free electrons and offer a low resistance are called____?
The substances which have a large number of free electrons and offer a low resistance are called____?
A. insulators
B. inductors
C. semi-conductors
D. conductorsResistance of a material always decreases if___________?
Resistance of a material always decreases if___________?
A. temperature of material is decreased
B. temperature of material is increased
C. number of free electrons available become more
D. none of the above is correctA glass rod when rubbed with silk cloth is charged because__________?
A glass rod when rubbed with silk cloth is charged because__________?
A. it takes in proton
B. its atoms are removed
C. it gives away electrons
D. it gives away positive chargeA substance whose molecules consist of dissimilar atoms is called____________?
A substance whose molecules consist of dissimilar atoms is called____________?
A. semi-conductor
B. super-conducto
C. compound
D. insulatorWhich quantity should be measured by the voltmeter ?
Which quantity should be measured by the voltmeter ?
A. Current
B. Voltage
C. Power
D. SpeedVoltmeter is a high resistance device used for measuring potential difference or voltage. It must be connected in parallel for measurement