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10th Telangana Board
IMPORTANT
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What are the limitations of Ohm's law?

Important Questions on Electric Current

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10th Telangana Board
IMPORTANT
Physical Science Crash Course (Based on Revised Syllabus-2023)>Chapter 9 - Electric Current>Exercise>Q 35
Why are the conductors of electric heating devices, such as toasters and electric irons, made of an alloy rather than a pure metal?
EASY
10th Telangana Board
IMPORTANT
Physical Science Crash Course (Based on Revised Syllabus-2023)>Chapter 9 - Electric Current>Exercise>Q 36
An electric heater draws a current of 5 A when connected to 220 V mains. Calculate the resistance of its filament.
MEDIUM
10th Telangana Board
IMPORTANT
Physical Science Crash Course (Based on Revised Syllabus-2023)>Chapter 9 - Electric Current>Exercise>Q 37
Define non-ohmic materials and give examples.
MEDIUM
10th Telangana Board
IMPORTANT
Physical Science Crash Course (Based on Revised Syllabus-2023)>Chapter 9 - Electric Current>Exercise>Q 38
Calculate the amount of electric current flowing through the body of a person who touches the live wire of 240 V with dry fingers. Assume that the resistance of the person's body is 100000 Ω.
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10th Telangana Board
IMPORTANT
Physical Science Crash Course (Based on Revised Syllabus-2023)>Chapter 9 - Electric Current>Exercise>Q 39
The value of two resistors in a series is in the ratio of 1:4, and a 10 ampere current flows in the circuit. If these two resistors are combined in a parallel circuit, then calculate the ratio of the current flowing through the resistors.
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10th Telangana Board
IMPORTANT
Physical Science Crash Course (Based on Revised Syllabus-2023)>Chapter 9 - Electric Current>Exercise>Q 40
What would be the effect on the circuit if one bulb out of three bulbs arranged in a series combination becomes fused?
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10th Telangana Board
IMPORTANT
Physical Science Crash Course (Based on Revised Syllabus-2023)>Chapter 9 - Electric Current>Exercise>Q 41

Find the equivalent resistance between A and B in the circuit diagram given below.

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10th Telangana Board
IMPORTANT
Physical Science Crash Course (Based on Revised Syllabus-2023)>Chapter 9 - Electric Current>Exercise>Q 42
A  9 volt battery is arranged in series combination with resistors of 2 Ω, 3 Ω, 4 Ω, 5 Ω, 12 Ω, what would be the current flowing through 2 Ω ?