Science, asked by satishyadav82460, 3 months ago

OR
(a) What are the advantages of connecting electrical devices in parallel with
the battery instead of connecting them in series?
(b) A cylinder of a material is 10 cm long and has a cross-section of 2 cm. I
its resistance along the length be 20 ohm, what will be its resistivity value
in number and units?

Answers

Answered by dv0112050

Answer:

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Answered by kaursukhmani0807

Answer:

Answer as follow:

Explanation:

(a) There is no division of voltage among the appliances when connected in parallel. The potential difference across each appliance is equal to the supplied voltage. The total effective resistance of the circuit can be reduced by connecting electrical appliances in parallel.

(b) Cross-section A = 2 cm2. We have R = ρL/A, where ρ is the resistivity.

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