# Strengthen Your Electromagnets Skills with Plainmath's Expert Help and Resource Collection

Recent questions in Electromagnets
Zachariah Ferrell 2023-03-25

## Which of the following units is used to express frequency? Hertz Watt Newton Pascal

Erin Stafford 2023-03-22

## What is $\frac{e}{m}$ value for electrons ?

Zachariah Ferrell 2023-03-18

## Is energy directly proportional to frequency?

Reblausvtct 2023-02-24

## What devices use electromagnetic induction?

mpifanahhf 2023-02-09

## In an electromagnetic wave, the amplitude of electric field is 1 V/m. the frequency of wave is $5×{10}^{14}Hz$. The wave is propagating along z-axis. The average energy density of electric field, in Joulem, will be?

Chana Rivera 2023-02-03

## Which of the following can produce electromagnetic waves? A charge moving with uniform acceleration. A charge moving with uniform retardation. An oscillating charge. All of the above

Brendan Nunez 2023-01-28

## An uncharged insulator can be charged by induction. True or False

ikalawangq00 2023-01-26

## What are two kinds of electricity?

Fabian Atkins 2023-01-01

## Why is soft iron used as the core of the electromagnet in an electric bell?

Audrina Graham 2022-12-28

## An electromagnetic wave has an electric field given by the expression (in Cartesian co-ordinates) : $\stackrel{\to }{E}\left(x,t\right)=6.0\mathrm{cos}\left(1.4×{10}^{7}x-3.43×{10}^{15}t\right)\stackrel{^}{z}$. What is the direction of the magnetic field at time t = 0 and position x = 0 ? A. -x B. +x C. -y D. +y

khaledarnba 2022-12-17

## Which of the following is true for electromagnetic waves? They are transverse waves and do not require a medium to travel. They do not follow laws of reflection and refraction. They follow laws of reflection and refraction. They are not deflected by electric and magnetic fields

Jose Hill 2022-12-15

## What's electromagnetic spectrum? Title the radiation which has longest wavelength?

Shafikr7r 2022-12-09

## The speed of electromagnetic radiation through vacuum is _________ m/s. 186,000, 3.00 × 108, 10,000, It depends on wavelength

AimettiA8J 2022-11-27

## Most of the waves in the electromagnetic spectrum are:?

cdcamandokwd 2022-11-26