153370 When a positively charged particle enters a uniform magnetic field with uniform velocity, its trajectory can be
1.a straight line 2. a circle 3 . a helix

153378 A square coil of side a carries a current $I$. The magnetic field at the centre of the coil is

153379 Circular loop of a wire and a long straight wire carry currents $I_{c}$ and $I_{e}$, respectively as shown in figure. Assuming that these are placed in the same plane, the magnetic fields will be zero at the centre of the loop when the separation $H$ is:

153381 Two concentric coils each of radius equal to $2 \pi$ cm are placed at right angles to each other. 3 ampere and 4 ampere are the currents flowing in each coil respectively. The magnetic induction in Weber $/ \mathrm{m}^{2}$ at the centre of the coils will be.
$\left(\mu_{0}=4 \pi \times 10^{-7} \mathrm{~Wb} / \mathrm{A} . \mathrm{m}\right)$

153370 When a positively charged particle enters a uniform magnetic field with uniform velocity, its trajectory can be
1.a straight line 2. a circle 3 . a helix

153378 A square coil of side a carries a current $I$. The magnetic field at the centre of the coil is

153379 Circular loop of a wire and a long straight wire carry currents $I_{c}$ and $I_{e}$, respectively as shown in figure. Assuming that these are placed in the same plane, the magnetic fields will be zero at the centre of the loop when the separation $H$ is:

153381 Two concentric coils each of radius equal to $2 \pi$ cm are placed at right angles to each other. 3 ampere and 4 ampere are the currents flowing in each coil respectively. The magnetic induction in Weber $/ \mathrm{m}^{2}$ at the centre of the coils will be.
$\left(\mu_{0}=4 \pi \times 10^{-7} \mathrm{~Wb} / \mathrm{A} . \mathrm{m}\right)$

153370 When a positively charged particle enters a uniform magnetic field with uniform velocity, its trajectory can be
1.a straight line 2. a circle 3 . a helix

153378 A square coil of side a carries a current $I$. The magnetic field at the centre of the coil is

153379 Circular loop of a wire and a long straight wire carry currents $I_{c}$ and $I_{e}$, respectively as shown in figure. Assuming that these are placed in the same plane, the magnetic fields will be zero at the centre of the loop when the separation $H$ is:

153381 Two concentric coils each of radius equal to $2 \pi$ cm are placed at right angles to each other. 3 ampere and 4 ampere are the currents flowing in each coil respectively. The magnetic induction in Weber $/ \mathrm{m}^{2}$ at the centre of the coils will be.
$\left(\mu_{0}=4 \pi \times 10^{-7} \mathrm{~Wb} / \mathrm{A} . \mathrm{m}\right)$

153370 When a positively charged particle enters a uniform magnetic field with uniform velocity, its trajectory can be
1.a straight line 2. a circle 3 . a helix

153378 A square coil of side a carries a current $I$. The magnetic field at the centre of the coil is

153379 Circular loop of a wire and a long straight wire carry currents $I_{c}$ and $I_{e}$, respectively as shown in figure. Assuming that these are placed in the same plane, the magnetic fields will be zero at the centre of the loop when the separation $H$ is:

153381 Two concentric coils each of radius equal to $2 \pi$ cm are placed at right angles to each other. 3 ampere and 4 ampere are the currents flowing in each coil respectively. The magnetic induction in Weber $/ \mathrm{m}^{2}$ at the centre of the coils will be.
$\left(\mu_{0}=4 \pi \times 10^{-7} \mathrm{~Wb} / \mathrm{A} . \mathrm{m}\right)$