EASY
10th ICSE
IMPORTANT
Earn 100

How does the resistance of a wire depend on its length? Give a reason for your answer.

Important Questions on Current Electricity

HARD
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 8 - Current Electricity>EXERCISE-8(A)>Q 10
How does the resistance of a metallic wire depend on its temperature? Explain with reason.
HARD
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 8 - Current Electricity>EXERCISE-8(A)>Q 11
Two wires, one of copper and the other of iron, are of the same length and same radius. Which will have more resistance? Give reason.
MEDIUM
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 8 - Current Electricity>EXERCISE-8(A)>Q 12
Name three factors on which resistance of a given wire depends and state how is it affected by the factors stated by you.
MEDIUM
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 8 - Current Electricity>EXERCISE-8(A)>Q 13
State Ohm’s law and draw a neat labelled circuit diagram containing a battery, a key, a voltmeter, an ammeter, a rheostat and an unknown resistance to verify it.
EASY
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 8 - Current Electricity>EXERCISE-8(A)>Q 14
What is the necessary condition for a conductor to obey Ohm's law ?
HARD
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 8 - Current Electricity>EXERCISE-8(A)>Q 15
(a) Draw a V-I graph for a conductor obeying Ohm’s law.
(b) What does the slope of V-I graph for a conductor represent?
MEDIUM
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 8 - Current Electricity>EXERCISE-8(A)>Q 16
Draw a I-V graph for a linear resistor. What does its slope represent?
MEDIUM
10th ICSE
IMPORTANT
Selina Icse Concise Physics For Class 10>Chapter 8 - Current Electricity>EXERCISE-8(A)>Q 17
What is an ohmic resistor? Give one example of an ohmic resistor. Draw a graph to show its current voltage relationship. How is the resistance of the resistor determined from this graph?