Force between Current Carrying Wires
PHXII04:MOVING CHARGES AND MAGNETISM

362711 Two parallel wires carrying currents in the same direction attract each other because of

1 potential difference between them
2 mutual inductance between them
3 electric force between them
4 magnetic force between them
PHXII04:MOVING CHARGES AND MAGNETISM

362712 Two long straight wires \(P\) and \(Q\) carrying equal current \(10\;A\) each were kept parallel to each other at \(5\;cm\) distance. Magnitude of magnetic force experienced by \(10\;cm\) length of wire \(P\) is \(F_{1}\). If distance between wires is halved and currents in them are doubled, force \(F_{2}\) on \(10\;cm\) length of wire \(P\) will be

1 \(10 F_{1}\)
2 \(8 F_{1}\)
3 \(\dfrac{F_{1}}{10}\)
4 \(\dfrac{F_{1}}{8}\)
PHXII04:MOVING CHARGES AND MAGNETISM

362713 A loosely wound helix made of stiff wire is mounted vertically with the lower end just touching a dish of mercury when a current from the battery is started in the coil through the mercury

1 The wire oscillates
2 The wire continues making contact
3 The wire breaks contact just when the current is passed
4 The mercury will expand by heating due to passage of current
PHXII04:MOVING CHARGES AND MAGNETISM

362714 Statement A :
Two parallel conducting wires carrying currents in opposite direction, come close to each other.
Statement B :
Parallel current repel and anti parallel currents attract.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
PHXII04:MOVING CHARGES AND MAGNETISM

362711 Two parallel wires carrying currents in the same direction attract each other because of

1 potential difference between them
2 mutual inductance between them
3 electric force between them
4 magnetic force between them
PHXII04:MOVING CHARGES AND MAGNETISM

362712 Two long straight wires \(P\) and \(Q\) carrying equal current \(10\;A\) each were kept parallel to each other at \(5\;cm\) distance. Magnitude of magnetic force experienced by \(10\;cm\) length of wire \(P\) is \(F_{1}\). If distance between wires is halved and currents in them are doubled, force \(F_{2}\) on \(10\;cm\) length of wire \(P\) will be

1 \(10 F_{1}\)
2 \(8 F_{1}\)
3 \(\dfrac{F_{1}}{10}\)
4 \(\dfrac{F_{1}}{8}\)
PHXII04:MOVING CHARGES AND MAGNETISM

362713 A loosely wound helix made of stiff wire is mounted vertically with the lower end just touching a dish of mercury when a current from the battery is started in the coil through the mercury

1 The wire oscillates
2 The wire continues making contact
3 The wire breaks contact just when the current is passed
4 The mercury will expand by heating due to passage of current
PHXII04:MOVING CHARGES AND MAGNETISM

362714 Statement A :
Two parallel conducting wires carrying currents in opposite direction, come close to each other.
Statement B :
Parallel current repel and anti parallel currents attract.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
NEET Test Series from KOTA - 10 Papers In MS WORD WhatsApp Here
PHXII04:MOVING CHARGES AND MAGNETISM

362711 Two parallel wires carrying currents in the same direction attract each other because of

1 potential difference between them
2 mutual inductance between them
3 electric force between them
4 magnetic force between them
PHXII04:MOVING CHARGES AND MAGNETISM

362712 Two long straight wires \(P\) and \(Q\) carrying equal current \(10\;A\) each were kept parallel to each other at \(5\;cm\) distance. Magnitude of magnetic force experienced by \(10\;cm\) length of wire \(P\) is \(F_{1}\). If distance between wires is halved and currents in them are doubled, force \(F_{2}\) on \(10\;cm\) length of wire \(P\) will be

1 \(10 F_{1}\)
2 \(8 F_{1}\)
3 \(\dfrac{F_{1}}{10}\)
4 \(\dfrac{F_{1}}{8}\)
PHXII04:MOVING CHARGES AND MAGNETISM

362713 A loosely wound helix made of stiff wire is mounted vertically with the lower end just touching a dish of mercury when a current from the battery is started in the coil through the mercury

1 The wire oscillates
2 The wire continues making contact
3 The wire breaks contact just when the current is passed
4 The mercury will expand by heating due to passage of current
PHXII04:MOVING CHARGES AND MAGNETISM

362714 Statement A :
Two parallel conducting wires carrying currents in opposite direction, come close to each other.
Statement B :
Parallel current repel and anti parallel currents attract.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.
PHXII04:MOVING CHARGES AND MAGNETISM

362711 Two parallel wires carrying currents in the same direction attract each other because of

1 potential difference between them
2 mutual inductance between them
3 electric force between them
4 magnetic force between them
PHXII04:MOVING CHARGES AND MAGNETISM

362712 Two long straight wires \(P\) and \(Q\) carrying equal current \(10\;A\) each were kept parallel to each other at \(5\;cm\) distance. Magnitude of magnetic force experienced by \(10\;cm\) length of wire \(P\) is \(F_{1}\). If distance between wires is halved and currents in them are doubled, force \(F_{2}\) on \(10\;cm\) length of wire \(P\) will be

1 \(10 F_{1}\)
2 \(8 F_{1}\)
3 \(\dfrac{F_{1}}{10}\)
4 \(\dfrac{F_{1}}{8}\)
PHXII04:MOVING CHARGES AND MAGNETISM

362713 A loosely wound helix made of stiff wire is mounted vertically with the lower end just touching a dish of mercury when a current from the battery is started in the coil through the mercury

1 The wire oscillates
2 The wire continues making contact
3 The wire breaks contact just when the current is passed
4 The mercury will expand by heating due to passage of current
PHXII04:MOVING CHARGES AND MAGNETISM

362714 Statement A :
Two parallel conducting wires carrying currents in opposite direction, come close to each other.
Statement B :
Parallel current repel and anti parallel currents attract.

1 Statement A is correct but Statement B is incorrect.
2 Statement A is incorrect but Statement B is correct.
3 Both statements are correct.
4 Both Statements are incorrect.