What are the factors on which heat dissipated by a conductor depends ?
What are the factors on which heat dissipated by a conductor depends ?
Heat dissipated depends upon $:$ $(i)$ the square of current through the conductor $(ii)$ the resistance of the conductor and $(iii)$ the time for which current is passed.
Similar Questions
$(a)$ State $Ohm's$ law. Express it mathematically.
$(b)$ Write symbols used in electric circuits to represent
$(i)$ variable resistance.
$(ii)$ voltmeter.
$(c)$ An electric bulb is rated $220, V$ and $100\, W$ When it is operated on $110\, V ,$ what will be the power consumed ?
$(a)$ State $Ohm's$ law. Express it mathematically.
$(b)$ Write symbols used in electric circuits to represent
$(i)$ variable resistance.
$(ii)$ voltmeter.
$(c)$ An electric bulb is rated $220, V$ and $100\, W$ When it is operated on $110\, V ,$ what will be the power consumed ?
$(a)$ Name the effect of electric current which is utilised in the working of an electrical fuse.
$(b)$ How is a fuse connected in a domestic circuit ?
$(a)$ Name the effect of electric current which is utilised in the working of an electrical fuse.
$(b)$ How is a fuse connected in a domestic circuit ?
In a household electric circuit different appliances are connected in parallel to one another. Give two reasons for this. An electrician puts a fuse of rating $5 \,A$ in that part of domestic electrical circuit in which an electrical heater of rating $1.5\, kW , 220 \,V$ is operating. What is likely to happen in this case and why ? What change, if any, needs to be made ?
In a household electric circuit different appliances are connected in parallel to one another. Give two reasons for this. An electrician puts a fuse of rating $5 \,A$ in that part of domestic electrical circuit in which an electrical heater of rating $1.5\, kW , 220 \,V$ is operating. What is likely to happen in this case and why ? What change, if any, needs to be made ?
The amount of $2\, A$ electric current is passed for $1\, minute$ through a conducting wire. How much total electric charge will pass through this wire?
The amount of $2\, A$ electric current is passed for $1\, minute$ through a conducting wire. How much total electric charge will pass through this wire?
Draw a labelled circuit diagram showing three resistors $R_{1}, R_{2}$ and $R_{3}$ connected in series with $a$ battery $(E),$ a rheostat $(R h),$ $a$ plug key $(K)$ and an ammeter $(A)$ using standard circuit symbols. Use this circuit to show that the same current flows through every part of the circuit. List two precautions you would observe while performing the experiment.
Draw a labelled circuit diagram showing three resistors $R_{1}, R_{2}$ and $R_{3}$ connected in series with $a$ battery $(E),$ a rheostat $(R h),$ $a$ plug key $(K)$ and an ammeter $(A)$ using standard circuit symbols. Use this circuit to show that the same current flows through every part of the circuit. List two precautions you would observe while performing the experiment.