At One Instant an Electron (Charge = -1

question 41

Multiple Choice

At one instant an electron (charge = -1.6 *10^-19C) is moving in the xy plane, the components of its velocity being v_x = 5 * 10⁵ m/s and v_y = 3 * 10⁵ m/s. A magnetic field of 0.8 T is in the positive x direction. At that instant the magnitude of the magnetic force on the electron is:

• A) 0
• B) 2.6 * 10^-14 N
• C) 3.8 * 10^-14 N
• D) 6.4 * 10^-14 N
• E) 1.0 * 10^-14 N

---

Definitions:

Receivable Turnover

A financial metric indicating how efficiently a company collects cash from credit sales by measuring the number of times average accounts receivable are collected over a period.

Inventory Turnover

A ratio showing how many times a company's inventory is sold and replaced over a period, indicating efficiency in managing stock.

Current Ratio

A liquidity ratio that measures a company's ability to pay short-term and long-term obligations, calculated as current assets divided by current liabilities.

Acid-test Ratio

A financial metric that assesses a company's ability to cover its short-term liabilities with its most liquid assets, excluding inventory.