EASY
10th CBSE
IMPORTANT
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Why is tungsten not used as a fuse wire?

Important Questions on Electricity

EASY
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 4 - Electricity>EXERCISES>Q 9
Alloys are preferred over metals for making the heating element of heaters. Why?
EASY
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 4 - Electricity>EXERCISES>Q 10
Silver is a better conductor of electricity than copper. Why then do we use copper wire for conducting electricity?
HARD
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 4 - Electricity>EXERCISES>Q 1
State Ohm's law. How can it be verified?
HARD
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 4 - Electricity>EXERCISES>Q 2
When the terminals of a cell are connected to the ends of an iron rod, electric current flows through the rod, When the terminals are connected to the ends of a wooden rod, no current flow. Explain why, when the wooden rod, no current flows. Explain why, when the wooden rod also has a large number of electrons.
HARD
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 4 - Electricity>EXERCISES>Q 3
Define electric current and state its unit. How can Ohm's law be used to define ohm?
HARD
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 4 - Electricity>EXERCISES>Q 4
Deduce the expression for the equivalent resistance of the parallel combination of two resistances R1 and R2.
HARD
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 4 - Electricity>EXERCISES>Q 5
Deduce the expression for the equivalent resistance of the two resistances R1, and R2; connected in series.
HARD
10th CBSE
IMPORTANT
Foundation Science Physics for Class 10>Chapter 4 - Electricity>EXERCISES>Q 6
Derive an expression for the heat produced in time t in a wire of resistance R, which is carrying a current I.