154690
A square loop of wire of side $5 \mathrm{~cm}$ is lying on a horizontal table. An electromagnet, above and to one side of the loop is turned on, causing a uniform magnetic field downward at an angle of $60^{\circ}$ to the vertical as shown in the figure, The magnetic induction is $0.50 \mathrm{~T}$. The average induced emf in the loop, if the field increases from zero to its final value in $0.2 \mathrm{~s}$ is
154690
A square loop of wire of side $5 \mathrm{~cm}$ is lying on a horizontal table. An electromagnet, above and to one side of the loop is turned on, causing a uniform magnetic field downward at an angle of $60^{\circ}$ to the vertical as shown in the figure, The magnetic induction is $0.50 \mathrm{~T}$. The average induced emf in the loop, if the field increases from zero to its final value in $0.2 \mathrm{~s}$ is
154690
A square loop of wire of side $5 \mathrm{~cm}$ is lying on a horizontal table. An electromagnet, above and to one side of the loop is turned on, causing a uniform magnetic field downward at an angle of $60^{\circ}$ to the vertical as shown in the figure, The magnetic induction is $0.50 \mathrm{~T}$. The average induced emf in the loop, if the field increases from zero to its final value in $0.2 \mathrm{~s}$ is
154690
A square loop of wire of side $5 \mathrm{~cm}$ is lying on a horizontal table. An electromagnet, above and to one side of the loop is turned on, causing a uniform magnetic field downward at an angle of $60^{\circ}$ to the vertical as shown in the figure, The magnetic induction is $0.50 \mathrm{~T}$. The average induced emf in the loop, if the field increases from zero to its final value in $0.2 \mathrm{~s}$ is
154690
A square loop of wire of side $5 \mathrm{~cm}$ is lying on a horizontal table. An electromagnet, above and to one side of the loop is turned on, causing a uniform magnetic field downward at an angle of $60^{\circ}$ to the vertical as shown in the figure, The magnetic induction is $0.50 \mathrm{~T}$. The average induced emf in the loop, if the field increases from zero to its final value in $0.2 \mathrm{~s}$ is