A capacitor marked 47k is indicative of which capacitance value?

The marking of "47k" on a capacitor typically indicates that the capacitance is 47 picofarads (pF) with a tolerance, often indicated by the letter after the numeral for reference. In this case, the "k" signifies a multiplier that relates to the pico scale.

Capacitance values are often represented using standard prefixes, where "p" stands for pico (10^-12), "n" for nano (10^-9), "u" for micro (10^-6), and "m" for milli (10^-3). Since "47k" translates to 47 picofarads, it is consistent with standard capacitor marking conventions.

The tolerance given, such as +/- 10%, indicates the permissible variation in the actual capacitance value from the marked value, which is standard practice in electronics to account for manufacturing variances.

Other choices would pertain to vastly larger capacitance values (nF, mF, and uF), which do not align with the "47k" marking. Therefore, the identification of 47 picofarads as the capacitance value accurately reflects the expected conventions and standards.