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The work done in moving 10 coulomb charges across the potential difference of 5 volts is _________.
20 joules
2 joules
50 joules
5 joules
50 joules
The work done in moving a charge between two points in an electric field is determined by the product of the charge and the potential difference. Given a charge of 10┬аC and a potential difference of 5┬аV, the work done is 10├Ч5=50┬аJoules.
The work done in moving a charge between two points in an electric field is determined by the product of the charge and the potential difference. Given a charge of 10┬аC and a potential difference of 5┬аV, the work done is 10├Ч5=50┬аJoules.
Think of potential difference as the height of a hill; moving a charge is like pushing a cart up that hill. The higher the hill (V) and the heavier the cart (Q), the more work (W) you need to perform.
Remember 'W = QV' as 'Work equals Quantity times Voltage'.
W=Q├ЧV тАФ where W is work in joules, Q is charge in coulombs, and V is potential difference in volts.
Electric potential difference (V) is defined as the work done (W) per unit charge (Q) to move the charge from one point to another. This relationship is governed by the formula V=QWтАЛ, which implies that energy (work) must be expended to overcome the electrical force when moving a charge across a potential difference.
The SI unit of work is the Joule (J).
The SI unit of potential difference is the Volt (V).
The SI unit of electric charge is the Coulomb (C).
Provides a simple quantitative measure of electrical energy transfer.
Calculating energy consumption in household appliances.
Designing battery capacities for electronic devices.
1 Volt is defined as 1 Joule of work per 1 Coulomb of charge (1┬аV=1┬аJ/C).
Option A (20 J) results from incorrect division, Option B (2 J) results from inverse division, and Option D (5 J) assumes work equals potential difference.
C is correct тАФ The work done is calculated using the formula W=Q├ЧV, resulting in 10┬аC├Ч5┬аV=50┬аJ.
Always verify units before calculation; if units are in milli-coulombs or millivolts, convert to base SI units (Coulombs and Volts) first to avoid order-of-magnitude errors.
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