Question

❖ᴏɴʟʏ ᴘʀᴏᴘᴇʀ ꜱᴏʟᴠᴇᴅ ᴀɴꜱᴡᴇʀ ᴡɪᴛʜ ɢᴏᴏᴅ ᴇxᴘʟᴀɴᴀɪᴏɴ ɴᴇᴇᴅᴇᴅ
❖ ɴᴏ ꜱᴘᴀᴍᴍɪɴɢ
❖ᴏɴʟʏ ꜰᴏʀ ᴍᴏᴅᴇʀᴀᴛᴏʀꜱ, ʙʀᴀɪɴʟʏ ꜱᴛᴀʀꜱ ᴀɴᴅ ᴏᴛʜᴇʀ ʙᴇꜱᴛ ᴜꜱᴇʀꜱ​​​​​

Answer 1

Step-by-step explanation:

First calculate Force exerted between the two charges by using Coulomb's Law.

F = k*q1*q2/r²

where k is the Coulomb's constant = 1/4π€

k = 8.98 × 10⁹ Nm²/C²

F = 8.98×10⁹ * 4×10-⁹ * 6×10-⁸ / 3² = 23.95 × 10-⁸ N

Work done in moving the charge 4×10-⁹ C to a location 0.5m from the charge stationary charge 6 × 10-⁸ C = Force between these two charges × Distance traversed by moving charge

Distance traversed by moving charge = 3 - 0.5 = 2.5m

Work done = 23.95×10-⁸ * 2.5 = 59.87 × 10-⁸ Nm or Joule