1. A 12 V battery is connected across a load having aresistance of 402 . Determine the current flowing in theload, the power consumed and the energy dissipated in 2minutes.2. A source of e.m.f. of 15V supplies a current of 2A for sixminutes. How much energy is provided in this time?3. Electrical equipment in an office takes a current of 13Afrom a 240V supply. Estimate the cost per week ofelectricity if the equipment is used for 30 hours each week

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Answered: A 12 V battery is connected across a…

A 12 V battery is connected across a load having a resistance of 4002. Determine the current flowing in the load, the power consumed and the energy dissipated in 2 minutes.

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Ohm's law

Ohm’s law is a prominent concept in physics and electronics. It gives the relation between the current and the voltage. It is used to analyze and construct electrical circuits. Ohm's law states that the voltage across a conductor is directly proportional to the current flowing through it.

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Question

1. A 12 V battery is connected across a load having a
resistance of 402 . Determine the current flowing in the
load, the power consumed and the energy dissipated in 2
minutes.
2. A source of e.m.f. of 15V supplies a current of 2A for six
minutes. How much energy is provided in this time?
3. Electrical equipment in an office takes a current of 13A
from a 240V supply. Estimate the cost per week of
electricity if the equipment is used for 30 hours each week

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