The potential difference across a conductor is doubled, the rate of generation of heat will
The potential difference across a conductor is doubled, the rate of generation of heat will
- A
become one$-$fourth
- B
becomes four times
- C
be halved
- D
be doubled
Similar Questions
$(a)$ Name an instrument that measures potential difference between two points in a circuit. Define the unit of potential difference in terms of SI unit of charge and work. Draw the circuit symbols for $(i)$ variable resistor, $(ii)$ a plug key which is closed one.
$(b)$ Two electric circuits $I$ and $II$ are shown below
$(i)$ Which of the two circuits has more resistance ?
$(ii)$ Through which circuit more current passes ?
$(iii)$ In which circuit, the potential difference across each resistor is equal ?
$(iv)$ If $R_{1}>R_{2}>R_{3}$, in which circuit more heat will be produced in $R_{1}$ as compared to other two resistors ?
$(a)$ Name an instrument that measures potential difference between two points in a circuit. Define the unit of potential difference in terms of SI unit of charge and work. Draw the circuit symbols for $(i)$ variable resistor, $(ii)$ a plug key which is closed one.
$(b)$ Two electric circuits $I$ and $II$ are shown below
$(i)$ Which of the two circuits has more resistance ?
$(ii)$ Through which circuit more current passes ?
$(iii)$ In which circuit, the potential difference across each resistor is equal ?
$(iv)$ If $R_{1}>R_{2}>R_{3}$, in which circuit more heat will be produced in $R_{1}$ as compared to other two resistors ?
Who invented simple battery?
Who invented simple battery?
What is meant by resistance ?
What is meant by resistance ?
Insulator like wood and rubber has a very low electrical resistance.
Insulator like wood and rubber has a very low electrical resistance.
A potential difference $V$ is applied across a conductor of length $L$ and diameter $D .$ How is the resistance $R$ of the conductor affected, when in turn $(i)$ $V$ is halved $(ii)$ $L$ is halved and $(iii)$ $D$ is doubled ? Justify your answer in each case.
A potential difference $V$ is applied across a conductor of length $L$ and diameter $D .$ How is the resistance $R$ of the conductor affected, when in turn $(i)$ $V$ is halved $(ii)$ $L$ is halved and $(iii)$ $D$ is doubled ? Justify your answer in each case.