Current Electricity Exe-9A Numericals Concise Physics ICSE Class 9 Selina Publishers

Current Electricity Exe-9A Numericals Concise Physics ICSE Class 9 Selina Publishers There is the solutions of Numericals Questions of your latest textbook which is applicable in 2024-25 academic sessionVisit official Website CISCE for detail information about ICSE Board Class-9 current electricity class 9 numericals.

Current Electricity Exe-9A Numericals

Concise Physics ICSE Class 9 Selina Publishers

 Board ICSE Class 9 Subject Physics Writer / Publication Concise selina Publishers Chapter-9 Current Electricity Exe-9A Electric Current Topics Solution of Exe-9(A) Numericals Academic Session 2024-2025

Exercise- 9A Electric Current

Current Electricity Numericals Physics Class-9 ICSE Selina Publishers

Page – 215

NUMERICALS:

Question-1 A charge 0.5 C passes through a cross section of a conductor in 5 s. Find the current.

Answer-1 When considering a flow of electric charges, the quantity of charge which passes is given by:

Quantity of charge=Rate of flow of charge×time,i.e. Q=It

Hence, current is given as:

I = Q/t = 0.5/5 = 0.1 A.

Question-2 A current of 1.5 A flows through a conductor for 2.0 s. What amount of charge passes through the conductor?

Answer-2 given, current= 1.5A,  time= 2.0 s

we know that,

Charge (q) = Current (I) x time (t)

q = 1.5 x 2

q = 3 C.

Question-3 When starter motor of a car is switched on for 0.8 s, a charge 24 C passes through the coil of the motor. Calculate the current in the coil.

Answer-3 When considering a flow of electric charges, the quantity of charge which passes is given by:

Quantity of charge=Rate of flow of charge × time, i.e. Q=It

Hence, current is given as:

I = Q/t = 24/0.8 = 30A.

—: end of  Current Electricity Exe-9A Numericals Concise Physics ICSE Class 9 Selina Publishers:—

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