A charge of $1\,C$ is moving in a magnetic field of $0.5\,Tesla$ with a velocity of $10\,m/sec$ Perpendicular to the field. Force experienced is.....$N$
  • A$5$
  • B$10$
  • C$0.5$
  • D$0$
Easy
art

Download our app
and get started for free

Experience the future of education. Simply download our apps or reach out to us for more information. Let's shape the future of learning together!No signup needed.*

Similar Questions

  • 1
    A $50\, ohm$ galvanometer gets full scale deflection when a current of $0.01\, A$ passes through the coil. When it is converted to a $10\, A$ ammeter, the shunt resistance is ........... $\Omega $
    View Solution
  • 2
    A $50\,\Omega $ resistance is connected to a battery of $5\,V$.  A galvanometer of resistance $100\, \Omega $ is to be used as an ammeter to measure current through the resistance, for this a resistance $r_s$ is connected to the galvanometer. Which of the following connections should be employed if the measured current is within $1\% $ of the current without the ammeter in the circuit ?
    View Solution
  • 3
    A length $L$ of wire carries a steady current $I$. It is bent first to form a circular plane coil of one turn. The same length is now bent more sharply to give a double loop of smaller radius. The magnetic field at the centre caused by the same current is
    View Solution
  • 4
    One of the two small circular coils, (none of them having any self- inductance) is suspended with a $V-$ shaped copper wire, with plane horizontal. The other coil is placed just below the first one with plane horizontal. Both the coils are connected in series with a $dc$ supply. The coils are found to attract each other with a force. Which one of the following statements is incorrect ?
    View Solution
  • 5
    A current $i$ flows in a circular coil of radius $r$. If the coil is placed in a uniform magnetic field $B$ with its plane parallel to the field, magnitude of the torque that acts on the coil is
    View Solution
  • 6
    A coil of one turn is made of a wire of certain length and then from the same length a coil of two turns is made. If the same current is passed in both the cases, then the ratio of the magnetic inductions at their centres will be
    View Solution
  • 7
    A spherical shell of radius $'R'$ carries uniformly distributed charge $'Q'$ is rotated about it's diameter with angular speed $\omega $ find it's magnetic moment
    View Solution
  • 8
    Given below are two statements: One is labelled as Assertion $A$ and the other is labelled as Reason $R$.

    Assertion $A:$ For measuring the potential difference across a resistance of $600\,\Omega$, the voltmeter with resistance $1000\,\Omega$ will be preferred over voltmeter with resistance $4000\,\Omega$.

    Reason $R:$ Voltmeter with higher resistance will draw smaller current than voltmeter with lower resistance.

    In the light of the above statements, choose the most appropriate answer from the options given below.

    View Solution
  • 9
    Which one of the following modifications may ncrease the sensitivity of moving coil galvanometer?

    $1^{st}$ Way : By using spring of smaller torsion constant.
    $2^{nd}$ Way : By using a smaller coil
    $3^{rd}$ Way : By using a stronger magnet
    $4^{th}$ Way : By using a coil having fewer number of turns.

    View Solution
  • 10
    Two very long, straight, parallel conductors $A$ and $B$ carry current of $5\,A$ and $10\,A$ respectively and are at a distance of $10\,cm$ from each other. The direction of current in two conductors is same. The force acting per unit length between two conductors is: $\left(\mu_0=4 \pi \times 10^{-7}\right.$ SI unit)
    View Solution