$B_{1}, B_{2}$ and $B_{3}$ are three identical bulbs connected as shown in the figure. When all the three bulbs glow, a current of $3 \,A$ is recorded by the ammeter $A$.
$(i)$ What happens to the glow of the other two bulbs when the bulb $B_{1}$ gets fused?
$(ii)$ What happens to the reading of $A_{1}, A_{2}, A_{3}$ and A when the bulb $B_{2}$ gets fused ?
$B_{1}, B_{2}$ and $B_{3}$ are three identical bulbs connected as shown in the figure. When all the three bulbs glow, a current of $3 \,A$ is recorded by the ammeter $A$.
$(i)$ What happens to the glow of the other two bulbs when the bulb $B_{1}$ gets fused?
$(ii)$ What happens to the reading of $A_{1}, A_{2}, A_{3}$ and A when the bulb $B_{2}$ gets fused ?
$(i)$ The glow of the bulbs $B _{2}$ and $B _{3}$ will remain the same.
$(ii)$ $A _{1}$ shows $1$ ampere, $A _{2}$ shows zero, $A _{3}$ shows $1$ ampere and $A$ shows $2$ ampere.
Similar Questions
Draw a schematic diagram of an electric circuit. (in the "on" position) consisting of a battery of five cells of $2\, V$ each, a $5\, \Omega$ resistor, a $8\, \Omega$ resistor, a $12$ $\Omega$ resistor and a plug key, all connected in series. An ammeter is put in the circuit to measure the electric current through the resistors and a voltmeter is connected so as to measure the potential difference across the $12\, \Omega$ resistor.
Calculate the reading shown by the
$(a)$ ammeter $(b)$ voltmeter in the below electric circuit
Draw a schematic diagram of an electric circuit. (in the "on" position) consisting of a battery of five cells of $2\, V$ each, a $5\, \Omega$ resistor, a $8\, \Omega$ resistor, a $12$ $\Omega$ resistor and a plug key, all connected in series. An ammeter is put in the circuit to measure the electric current through the resistors and a voltmeter is connected so as to measure the potential difference across the $12\, \Omega$ resistor.
Calculate the reading shown by the
$(a)$ ammeter $(b)$ voltmeter in the below electric circuit
The electrical resistivity of few materials is given below in ohm-metre. Which of these materials can be used for making element of a heating device ?
$A$
$6.84 \times 10^{-8}\, \Omega m$
$B$
$1.60 \times 10^{-8}\, \Omega m$
$C$
$1.00 \times 10^{-4}\, \Omega m$
$D$
$2.50 \times 10^{12}\, \Omega m$
$E$
$4.40 \times 10^{-5}\, \Omega m$
$F$
$2.30 \times 10^{17}\, \Omega m$
The electrical resistivity of few materials is given below in ohm-metre. Which of these materials can be used for making element of a heating device ?
| $A$ | $6.84 \times 10^{-8}\, \Omega m$ |
| $B$ | $1.60 \times 10^{-8}\, \Omega m$ |
| $C$ | $1.00 \times 10^{-4}\, \Omega m$ |
| $D$ | $2.50 \times 10^{12}\, \Omega m$ |
| $E$ | $4.40 \times 10^{-5}\, \Omega m$ |
| $F$ | $2.30 \times 10^{17}\, \Omega m$ |
$(a)$ Derive the formula for the calculation of work done when current flows through a resistor
$(b)$ One electric bulb is rated $40\, W$ and $240\, V$ and other $25\, W$ and $240\, V$. Which bulb has higher resistance and how many times ?
$(a)$ Derive the formula for the calculation of work done when current flows through a resistor
$(b)$ One electric bulb is rated $40\, W$ and $240\, V$ and other $25\, W$ and $240\, V$. Which bulb has higher resistance and how many times ?
An electric iron draws a current of $0.5\, A$ when the voltage is $200$ volt. Calculate the amount of electric charge flowing through it in one hour.
An electric iron draws a current of $0.5\, A$ when the voltage is $200$ volt. Calculate the amount of electric charge flowing through it in one hour.
An electric bulb rated $220 \,V , 60\, W$ is working at full efficiency.
$(i)$ State the resistance of the coil of the bulb. Another identical bulb is connected in series with the first one and the system is connected across the mains as shown below. $(ii)$ State the rate of conversion of energy in each bulb. $(iii)$ Calculate the total power. $(iv)$ What will be the total power if the bulbs are connected in parallel ?
An electric bulb rated $220 \,V , 60\, W$ is working at full efficiency.
$(i)$ State the resistance of the coil of the bulb. Another identical bulb is connected in series with the first one and the system is connected across the mains as shown below. $(ii)$ State the rate of conversion of energy in each bulb. $(iii)$ Calculate the total power. $(iv)$ What will be the total power if the bulbs are connected in parallel ?