According to Ohm's law $...\, .$
According to Ohm's law $...\, .$
- A
the resistance increases with the increases in current
- B
the resistance increases with the increases in voltage
- C
the current increases with the increases in voltage
- D
both the resistance and current increases with the increases in voltage
Similar Questions
What is the commercial unit of electrical energy? Represent it in terms of joules.
What is the commercial unit of electrical energy? Represent it in terms of joules.
How would the reading of voltmeter $(V)$ change, if it is connected between $B$ and $C$ ? Justify your answer.
How would the reading of voltmeter $(V)$ change, if it is connected between $B$ and $C$ ? Justify your answer.
A piece of wire is redrawn, without change in volume so that its radius is halved. Compare the new resistance with the original resistance.
A piece of wire is redrawn, without change in volume so that its radius is halved. Compare the new resistance with the original resistance.
$(a)$ In the circuit shown connect a nichrome wire of length ${ }^{\prime \prime} L^{\prime \prime}$ between points $X$ and $Y$ and note the ammeter reading.
$(i)$ When this experiment is repeated by inserting another nichrome wire of the same thickness but twice the length $(2 L),$ what changes are observed in the ammeter reading ?
$(ii)$ State the changes that are observed in the ammeter reading if we double the area of cross-section without changing the length in the above experiment. Justify your answer in both the cases.
$(b)$ "Potential difference between points $A$ and $B$ in an electric field is $1\, V^{\prime \prime} .$ Explain the statement.
$(a)$ In the circuit shown connect a nichrome wire of length ${ }^{\prime \prime} L^{\prime \prime}$ between points $X$ and $Y$ and note the ammeter reading.
$(i)$ When this experiment is repeated by inserting another nichrome wire of the same thickness but twice the length $(2 L),$ what changes are observed in the ammeter reading ?
$(ii)$ State the changes that are observed in the ammeter reading if we double the area of cross-section without changing the length in the above experiment. Justify your answer in both the cases.
$(b)$ "Potential difference between points $A$ and $B$ in an electric field is $1\, V^{\prime \prime} .$ Explain the statement.
$(a)$ How is the direction of electric current related to the direction of flow of electrons in a wire ?
$(b)$ Calculate the current in a circuit, if $500 \,C$ of charge passes through it in $10$ minutes.
$(a)$ How is the direction of electric current related to the direction of flow of electrons in a wire ?
$(b)$ Calculate the current in a circuit, if $500 \,C$ of charge passes through it in $10$ minutes.