Define $1$ volt.
Define $1$ volt.
The potential across a conductor is said to be one volt, if $1$ joule of work is done in moving a charge of $1$ coulomb between the two ends of the conductor.
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An electric kettle consumes $1\, kW$ of electric power when operated at $220\, V$. A fuse wire of what rating (in $A$) must be used for it?
An electric kettle consumes $1\, kW$ of electric power when operated at $220\, V$. A fuse wire of what rating (in $A$) must be used for it?
$(a)$ Give reason why tungsten is used for making filament of electric lamps.
$(b)$ The elements of heating electrical appliances are made$-$up of an alloy rather than pure metal.
$(a)$ Give reason why tungsten is used for making filament of electric lamps.
$(b)$ The elements of heating electrical appliances are made$-$up of an alloy rather than pure metal.
An electric refrigerator rated $400\, W$ operates $8$ hour per day. What is the cost of the energy to operate it for $30$ days at ₹ $3.00$ per $k W h ?$
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You are given three resistors of $10\, \Omega, 10\, \Omega, 20\, \Omega$ to $a$ battery of emf $2.5\, V$, a key, an ammeter and a voltmeter. Draw a circuit diagram showing the correct connections of a given components such that the voltmeter gives a reading of $2.0\, V$.
You are given three resistors of $10\, \Omega, 10\, \Omega, 20\, \Omega$ to $a$ battery of emf $2.5\, V$, a key, an ammeter and a voltmeter. Draw a circuit diagram showing the correct connections of a given components such that the voltmeter gives a reading of $2.0\, V$.
What makes the electric current to flow through an electrolyte?
What makes the electric current to flow through an electrolyte?