Class x Electric Current questions solved. Series-02

 Class x 

Electric Current questions solved.  

Series-02

Current Electricity

Series-02

One and two Marks questions

1. State Ohm's law.
2. Write two limitations of ohms law.
3. How is the voltmeter connected in the circuit to measure the potential difference between two points  ?
4.   What determines the rate at which energy is delivered by a current ?
5.  Why are coils of electric toasters and electric iron's made of an aloy rather than a pure metal ?
6.  Why do electricians wear a rubber hand gloves while working with electricity ?
7.  A current of 200 mA flows through a 4 kilo ohm registor . What is the potential difference across the registor?
8.   How does the resistance of a pure metal changes with temperature ?
9.  Write down an expression for the resistance of a metallic wire in terms of resistivity.
10. A wire that has resistance R is cut into two equal pieces. The two parts are joined in parallel . What is the resistance of the combination ?


Solutions: Solved current Electricity question bank set-02