Electric current has both magnitude and direction. It is a
Easy
Download our app for free and get startedPlay store
(b)

Current is a scalar quantity.

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
    It is easier to start a car engine on a hot day than on a cold day. This is because the internal resistance of the car battery
    View Solution
  • 2
    Value of the resistance $R$ in the figure is .......... $\Omega$
    View Solution
  • 3
    The e.m.f. of a cell is $E\, volts$ and internal resistance is $r$ $ohm$. The resistance in external circuit is also $r$ $ohm$. The p.d. across the cell will be
    View Solution
  • 4
    Three $60\, W$ light bulbs are mistakenly wired in series and connected to a $120\,V$ power supply. Assume the light bulbs are rated for single connection to $120\,V$. With the mistaken connection, the power dissipated by each bulb is: .................. $W$
    View Solution
  • 5
    Which arrangement of four identical resistances should be used to draw maximum energy from a cell of voltage $V$
    View Solution
  • 6
    Two identical cells each of emf $1.5 \,V$ are connected in parallel across a parallel combination voltmeter connected in the circuit measures $1.2 \,V$.

    The internal resistance of each cell is.................$\Omega$

    View Solution
  • 7
    Four ammeters with identical internal resistance $r$ and a resistor $R$ are connected to a current source as given. if reading of $A_1$ and $A_2$ is $3\ A$ and $5\ A$ respectively then the reading $A_4$ is ............. $A$
    View Solution
  • 8
    Two cells, $e.m.f.$ of each is $E$ and internal resistance $r$ are connected in parallel between the resistance $R$. The maximum energy given to the resistor will be, only when
    View Solution
  • 9
    The e.m.f. of a cell is $E\, volts$ and internal resistance is $r$ $ohm$. The resistance in external circuit is also $r$ $ohm$. The p.d. across the cell will be
    View Solution
  • 10
    A current of $2\,A$ flows through a $2\,\Omega$ resistor when connected across a battery. The same battery supplies a current of $0.5\,\, A$ when connected across a $9 \,\,\Omega$ resistor. The internal resistance of the battery is 
    View Solution