Electrical Instruments
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
PHXII03:CURRENT ELECTRICITY

357367 In balanced meter bridge, the resistance of bridge wire is \(0.1\Omega /cm\). Unknown resistance \(X\) is connected in left gap and \(6\Omega \) in right gap, null point divides the wire in the ratio 2 : 3. Find the current drawn from the battery of 5\(V\) having negligible resistance

1 \(1\,A\)
2 \(1.5A\)
3 \(2A\)
4 \(5A\)
PHXII03:CURRENT ELECTRICITY

357368 A wheatstone bridge is used to determine the value of unknown resistance \(X\) by adjusting the variable resistance \(Y\) as shown in the figure. For the most precise measurement of \(X\), the resistance \(P\) and \(Q\)
supporting img

1 should be approximately equal and are small
2 should be very large and unequal
3 do not play any significant role
4 should be approximately equal to 2\(X\)
PHXII03:CURRENT ELECTRICITY

357369 In a Wheatstone's bridge, three resistances \(\mathrm{P}\), \(\mathrm{Q}\) and \(\mathrm{R}\) connected in the three arms and the fourth arm is formed by two resistances \(S_{1}\) and \(S_{2}\) connected in parallel. The condition for the bridge to be balanced will be

1 \(\dfrac{P}{Q}=\dfrac{2 R}{S_{1}+S_{2}}\)
2 \(\dfrac{P}{Q}=\dfrac{R\left(S_{1}+S_{2}\right)}{S_{1} S_{2}}\)
3 \(\dfrac{P}{Q}=\dfrac{R\left(S_{1}+S_{2}\right)}{2 S_{1} S_{2}}\)
4 \(\dfrac{P}{Q}=\dfrac{R}{S_{1}+S_{2}}\)
PHXII03:CURRENT ELECTRICITY

357367 In balanced meter bridge, the resistance of bridge wire is \(0.1\Omega /cm\). Unknown resistance \(X\) is connected in left gap and \(6\Omega \) in right gap, null point divides the wire in the ratio 2 : 3. Find the current drawn from the battery of 5\(V\) having negligible resistance

1 \(1\,A\)
2 \(1.5A\)
3 \(2A\)
4 \(5A\)
PHXII03:CURRENT ELECTRICITY

357368 A wheatstone bridge is used to determine the value of unknown resistance \(X\) by adjusting the variable resistance \(Y\) as shown in the figure. For the most precise measurement of \(X\), the resistance \(P\) and \(Q\)
supporting img

1 should be approximately equal and are small
2 should be very large and unequal
3 do not play any significant role
4 should be approximately equal to 2\(X\)
PHXII03:CURRENT ELECTRICITY

357369 In a Wheatstone's bridge, three resistances \(\mathrm{P}\), \(\mathrm{Q}\) and \(\mathrm{R}\) connected in the three arms and the fourth arm is formed by two resistances \(S_{1}\) and \(S_{2}\) connected in parallel. The condition for the bridge to be balanced will be

1 \(\dfrac{P}{Q}=\dfrac{2 R}{S_{1}+S_{2}}\)
2 \(\dfrac{P}{Q}=\dfrac{R\left(S_{1}+S_{2}\right)}{S_{1} S_{2}}\)
3 \(\dfrac{P}{Q}=\dfrac{R\left(S_{1}+S_{2}\right)}{2 S_{1} S_{2}}\)
4 \(\dfrac{P}{Q}=\dfrac{R}{S_{1}+S_{2}}\)
PHXII03:CURRENT ELECTRICITY

357367 In balanced meter bridge, the resistance of bridge wire is \(0.1\Omega /cm\). Unknown resistance \(X\) is connected in left gap and \(6\Omega \) in right gap, null point divides the wire in the ratio 2 : 3. Find the current drawn from the battery of 5\(V\) having negligible resistance

1 \(1\,A\)
2 \(1.5A\)
3 \(2A\)
4 \(5A\)
PHXII03:CURRENT ELECTRICITY

357368 A wheatstone bridge is used to determine the value of unknown resistance \(X\) by adjusting the variable resistance \(Y\) as shown in the figure. For the most precise measurement of \(X\), the resistance \(P\) and \(Q\)
supporting img

1 should be approximately equal and are small
2 should be very large and unequal
3 do not play any significant role
4 should be approximately equal to 2\(X\)
PHXII03:CURRENT ELECTRICITY

357369 In a Wheatstone's bridge, three resistances \(\mathrm{P}\), \(\mathrm{Q}\) and \(\mathrm{R}\) connected in the three arms and the fourth arm is formed by two resistances \(S_{1}\) and \(S_{2}\) connected in parallel. The condition for the bridge to be balanced will be

1 \(\dfrac{P}{Q}=\dfrac{2 R}{S_{1}+S_{2}}\)
2 \(\dfrac{P}{Q}=\dfrac{R\left(S_{1}+S_{2}\right)}{S_{1} S_{2}}\)
3 \(\dfrac{P}{Q}=\dfrac{R\left(S_{1}+S_{2}\right)}{2 S_{1} S_{2}}\)
4 \(\dfrac{P}{Q}=\dfrac{R}{S_{1}+S_{2}}\)