Class 10ScienceMagnetic Effects of Electric CurrentMix Examples - Magnetic Effects of Electric Current
EasyWhich of the following statements is incorrect for a current-carrying solenoid?
- AThe magnetic field at all points inside the solenoid is uniform.
- BIt acts as a magnet when a soft iron core is placed inside it to produce a strong magnetic field.
- CThe pattern of its magnetic field lines is different from that of a bar magnet.
- DReversing the direction of the current in the solenoid reverses the positions of its $N$ and $S$ poles.
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Similar Questions
$(a)$ Explain the difference between direct current and alternating current. Write one important advantage of using alternating current.
$(b)$ An air conditioner of $2 \,kW$ is used in an electric circuit having a fuse of $10 \,A$ rating. If the potential difference of the supply is $220 \,V$,will the fuse be able to withstand the current when the air conditioner is switched on? Justify your answer.
$(b)$ An air conditioner of $2 \,kW$ is used in an electric circuit having a fuse of $10 \,A$ rating. If the potential difference of the supply is $220 \,V$,will the fuse be able to withstand the current when the air conditioner is switched on? Justify your answer.
Medium
View SolutionOne should always use rubber gloves and rubber shoes when dealing with electricity.
Easy
View Solution$(i)$ Write the values of the following physical quantities in connection with domestic power supply in our country: $(a)$ potential difference between live wire and neutral wire.
$(b)$ frequency of $AC$.
$(ii)$ Explain the role of the following as safety measure in domestic electric appliances/circuits:
$(a)$ earth wire
$(b)$ fuse.
$(b)$ frequency of $AC$.
$(ii)$ Explain the role of the following as safety measure in domestic electric appliances/circuits:
$(a)$ earth wire
$(b)$ fuse.
Medium
View SolutionIdentify the poles of the magnet in the given figure.
Easy
View SolutionWhat is the frequency of $220 \ V$ $DC$ voltage? (In $Hz$)
Easy
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