Please answer number 29 27. How can the magnetic field in a coil of wire field be increased?a) By increasing the current through the coil of wireb) By decreasing the current through the coil of wirec) By adding more loops of wire in the coild) Both A & C28. If current is applied to a wire in front of you and you know that the direction of the current goes fromyour left to your right, what is the direction of the magnetic fields produced?a) Upwardsb) Away from your directionc) Towards your directiond) None of these29. An electromagnetic wave that has very short wavelength will have,c) Low Energyd) None of the abovea) Low frequencyb) high Energy

29. The energy of an electromagnetic wave is given by : E=hcλ.....(1) Where h is Planck's constant c…

Answered: 29. An electromagnetic wave that has…

29. An electromagnetic wave that has very short wavelength will have, c) Low Energy d) None of the above a) Low frequency b) high Energy

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter23: Electromagnetic Induction, Ac Circuits, And Electrical Technologies

Section: Chapter Questions

Problem 2CQ: When a magnet is thrust into a coil as in Figure 23.4(a), what is the direction of the louse exerted...

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Question

Please answer number 29

27. How can the magnetic field in a coil of wire field be increased?
a) By increasing the current through the coil of wire
b) By decreasing the current through the coil of wire
c) By adding more loops of wire in the coil
d) Both A & C
28. If current is applied to a wire in front of you and you know that the direction of the current goes from
your left to your right, what is the direction of the magnetic fields produced?
a) Upwards
b) Away from your direction
c) Towards your direction
d) None of these
29. An electromagnetic wave that has very short wavelength will have,
c) Low Energy
d) None of the above
a) Low frequency
b) high Energy

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