EASY
10th CBSE
IMPORTANT
Earn 100

Define Ohm's law.

Important Questions on Electricity

EASY
10th CBSE
IMPORTANT
Concise Physics A Textbook of Science for Class X>Chapter 3 - Part -1>Electricity>Q 17

Answer the following:

Give a schematic representation of the circuit to study Ohm's law.

EASY
10th CBSE
IMPORTANT
Concise Physics A Textbook of Science for Class X>Chapter 3 - Part -1>Electricity>Q 18
Define electric power.
EASY
10th CBSE
IMPORTANT
Concise Physics A Textbook of Science for Class X>Chapter 3 - Part -1>Electricity>Q 18
Give the commercial unit of electrical energy.
MEDIUM
10th CBSE
IMPORTANT
Concise Physics A Textbook of Science for Class X>Chapter 3 - Part -1>Electricity>Q 18
Derive the relation between electric power and joule.
EASY
10th CBSE
IMPORTANT
Concise Physics A Textbook of Science for Class X>Chapter 3 - Part -1>Electricity>Q 19
What is meant by the heating effect of current? Give two applications of the heating effect of current.
MEDIUM
10th CBSE
IMPORTANT
Concise Physics A Textbook of Science for Class X>Chapter 3 - Part -1>Electricity>Q 20
If two conducting wires of the same material and of equal lengths and equal diameters are first connected in series and then in parallel in a circuit across the same potential difference, then what would be the ratio of heat produced in series and in parallel combinations?
MEDIUM
10th CBSE
IMPORTANT
Concise Physics A Textbook of Science for Class X>Chapter 3 - Part -1>Electricity>Q 21
Derive an expression for the heat produced due to a current I flowing for a time interval t through resistor R having a potential difference V across its ends.
EASY
10th CBSE
IMPORTANT
Concise Physics A Textbook of Science for Class X>Chapter 3 - Part -1>Electricity>Q 22
If a potential difference of 250 V is applied across a resistance of 500 Ω in an electric heater, then how would you calculate the current and heat produced in joules in 10 s?