201. narrow
202. Permanent Magnets
203. 60
204. Unlimited
205. lagging B behind H
206. Electric potential
207. Element
208. 40% ; 60%
209. about 1837 times
210. 8
211. valence
212. a conductor
213. an insulator
214. a semiconductor
215. a metal
216. 624 × 1016
217. 8.5 × 1022
218. free
219. causes free electrons to flow
220. inversely proportional to
221. remains the same
222. 15 ohms
223. Ohm-m
224. increases
225. Siemens
226. 1.6 × 10-8 Ω-m
227. Siemens/m
228. positive
229. negative
230. nature and temperature
231. decreases
232. negative
233. almost zero
234. 1/252 per °C
235. 1/250 per °C
236. 1/180 per °C
237. Silicon carbide
238. Kilowatt-hour
239. 5
240. 10 times
241. neutral
242. deficit of electrons
243. excess of electrons
244. protons and electrons
245. 8.854 × 10-12 F/m
246. 1
247. 9 × 109 N
248. 8.854 × 10-11 F/m
249. decreases
250. Dielectric constant

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